Home / Topic / Newton's law of cooling
Topic Newton's law of cooling
Asked 2 times across 2 UPSC exams, peaking in 2024.
Key insights
- Most tested in NDA — 1 of 2 PYQs
- Most asked in 2024
- Recurs across 1 years (2024–2024)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
NDA 2024 → GEO 2024
How the concept evolved
Rising — more than half its appearances (2 of 2) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
NDA2024
Given below are the four cases in which certain heat transfer is taking place
- Ice is melting in a glass full of water
- Water is boiling in an open container
- A metal rod is heated in a furnace
- A cup of coffee is allowed to cool on a table. In
which of the above cases, the Newton's Law of Cooling is applicable ?
- A 1 only
- B 4 only ✓
- C 1 and 4 only
- D 1, 2 and 3
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
GEO2024
A cup of tea is placed at a table, and the room temperature is 35°C. The tea cools from 90°C to 80°C in 5 minutes. Which one among the following is the correct time taken for the tea to cool from 70°C to 50°C ?
- A 5 minutes
- B 7 minutes
- C 9 minutes ✓
- D 11 minutes
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
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